http://www.sciencedaily.com/releases/2007/04/070424091417.htm-
DNA strands elasticity is altered by being exsposed toUV light. The small changes in cross linking can very profoundly affect the ability of DNA to recognize specific molecules. It can disrupt its ability to replicate and interact with transcriptional machinary to sythesize proteins. The collegues found out that the viral DNA exposed to UV light are due to the local unwinding of the double helix in some regions arising form the massive formation of crosslinked structures.
What are the major functions of nucleic acids in the cell? The major function of nucleic acid is to store information need for the cell.
What are the differences in RNA and DNA? RNA is a nucluic acid composed of a single strandand distinguished from DNA by comtaining ribose and uracil. DNA is hereditary info in the form of a large moleculecalled deoxyribonucleic acid.
List three things you learned from this article in your own words.I learned that they had examined synthetic DNA to to figure out the limit to which diffrent bases are affected by UV light. I also learned that these were the first measurements that establish a relationship between DNA nanomechanics and damage. One of the colluges belived this paves the way for streach release for spectroscope measurments in DNA dianostics.
What impact would the absence of this organelle have on the cell?If they didn't have the DNA in this, there would be nothing to cause people to get skin cancer from the UV light distorting it.
Showing posts with label Ukyla Johnson. Show all posts
Showing posts with label Ukyla Johnson. Show all posts
Tuesday, December 11, 2007
Protein Enables Discovery Of Quantum Effect In Photosynthesis, Ukyla Johnson
http://www.sciencedaily.com/releases/2007/05/070502120327.htm-
There is a protien called a taco shell protien. It's ribbon like protien wraps around three clusters of seven chlorophylls, just like a taco shell around ground beef. The protein, comes from a photosynthetic bacteria that lives in extremely high, high temps. Teh taco shell is the most studied protein in a photosythesis. Researchers refer to this as the antenna system. That is molecules thta efficiently transfer energy from light in a cascade.
What is the chemical equation for photosynthesis?
CO2+H2O+Light Energy=(CH2O) +O2
What organelles are involved in this process?
Chlorplasts and Ribosomes
List three things you learned from this article in your own words.
I learned that they transfer energy through wavelengths with extreme accuracy. I learned that in the many areas of pahse space can be sampled effectively to find the most efficent path for energy to pass.
What impact would the absence of this process have on the biosphere? It would cause a world wide wipe out of many people and plants because they wouldn't have any food or carbon dioxide to breathe. Also the animals would die as well.
There is a protien called a taco shell protien. It's ribbon like protien wraps around three clusters of seven chlorophylls, just like a taco shell around ground beef. The protein, comes from a photosynthetic bacteria that lives in extremely high, high temps. Teh taco shell is the most studied protein in a photosythesis. Researchers refer to this as the antenna system. That is molecules thta efficiently transfer energy from light in a cascade.
What is the chemical equation for photosynthesis?
CO2+H2O+Light Energy=(CH2O) +O2
What organelles are involved in this process?
Chlorplasts and Ribosomes
List three things you learned from this article in your own words.
I learned that they transfer energy through wavelengths with extreme accuracy. I learned that in the many areas of pahse space can be sampled effectively to find the most efficent path for energy to pass.
What impact would the absence of this process have on the biosphere? It would cause a world wide wipe out of many people and plants because they wouldn't have any food or carbon dioxide to breathe. Also the animals would die as well.
Genetically Engineered 'Mighty Mouse' Can Run 6 Kilometers Without Stopping, Ukyla Johnson
http://www.sciencedaily.com/releases/2007/11/071101162739.htm-
They use mainly the fatty acids for energy and produce very very small amounts of lactic acid.They also eat 60 percent more althought they remain fit, leaner, and breed longer than the wild mice in the controled group. Some female mice have children when they are only 2.5 years old. That's amazing since they don't have children after they are one year old.
What process is being used in the article?
They had over expressed the gene for enzyme phosphoenolypyruvate carboxykinases(PEPCK-C).
What is the purpose of genetic engineering in this article?
The purpose of them doing all this is to understand the metabolic and physiological function of (PEPCK-C) in skeletal muscle and adipose tissue.
List three things you learned from this article in your own words.
I learned that they were studying the rats before they expressed the gene. They found out that some of them had higher levels of that particular gene because they were more active. They also found out that they where really more aggrissive.
What impact would the absence of this process have on humanity?
We wouldn't have understood clearly why some people are able to do things for long periods of time without stopping. We wouldn't have also known that this gene is somewhat mainly the cause for it.
They use mainly the fatty acids for energy and produce very very small amounts of lactic acid.They also eat 60 percent more althought they remain fit, leaner, and breed longer than the wild mice in the controled group. Some female mice have children when they are only 2.5 years old. That's amazing since they don't have children after they are one year old.
What process is being used in the article?
They had over expressed the gene for enzyme phosphoenolypyruvate carboxykinases(PEPCK-C).
What is the purpose of genetic engineering in this article?
The purpose of them doing all this is to understand the metabolic and physiological function of (PEPCK-C) in skeletal muscle and adipose tissue.
List three things you learned from this article in your own words.
I learned that they were studying the rats before they expressed the gene. They found out that some of them had higher levels of that particular gene because they were more active. They also found out that they where really more aggrissive.
What impact would the absence of this process have on humanity?
We wouldn't have understood clearly why some people are able to do things for long periods of time without stopping. We wouldn't have also known that this gene is somewhat mainly the cause for it.
Monday, December 10, 2007
Molecular Biologists Devise Strategy To Starve Brain Tumors, Ukyla Johnson
http://www.sciencedaily.com/videos/2007/0910-unraveling_brain_tumors.htm-
Brain tumors come up from cancer stem cells living in small safe areas made by blood vessels in the brain. They thought all brain tumors were the same but there was a small group of cancer cells that give rise to the cells that forms cancer. They found out that they live close to bloodvessels that feed them.
What are the symptoms of this disease? It messes up the functions in the brain and if you don't get it checked it can kill you.
How is this disease passed from person to person?
It isn't passed from person to person it is really a genetic mutation in the cell.
List three things you learned from this article in your own words.In experiments he said that the drugs that targets the blood vessels also kills the cancer stem cell as well and can wipe out the tumor completely. The drugs Avastin andTarceva are no being used on humans to see if they can target the cancer stem cells. Lastly the ones in breast and colon cancer contain stem cells and mabye could be treated the same way.
What impact does this disease have on the US economy? It doesn't really have a major impact on the US economy other than cause many people to have cause with their bodies. If it wasn't treated and people didn't know what it was many people probably would have died.
Brain tumors come up from cancer stem cells living in small safe areas made by blood vessels in the brain. They thought all brain tumors were the same but there was a small group of cancer cells that give rise to the cells that forms cancer. They found out that they live close to bloodvessels that feed them.
What are the symptoms of this disease? It messes up the functions in the brain and if you don't get it checked it can kill you.
How is this disease passed from person to person?
It isn't passed from person to person it is really a genetic mutation in the cell.
List three things you learned from this article in your own words.In experiments he said that the drugs that targets the blood vessels also kills the cancer stem cell as well and can wipe out the tumor completely. The drugs Avastin andTarceva are no being used on humans to see if they can target the cancer stem cells. Lastly the ones in breast and colon cancer contain stem cells and mabye could be treated the same way.
What impact does this disease have on the US economy? It doesn't really have a major impact on the US economy other than cause many people to have cause with their bodies. If it wasn't treated and people didn't know what it was many people probably would have died.
Melting Ice Displaces Walruses In The Russian Arctic, Ukyla Johnson
http://www.sciencedaily.com/releases/2007/11/071126143646.htm-
Walruses have been spotted in on the Russian Artic coast. They have been spotted on this coast because of the melting of the Artic Sea ice. They need the ice to support them because they can't swim constantly but need to stop after foraging for food. The sea ice thickness has been reduced by 40 percent siin the last 30 years. Rhey are saying in 2080 the artic sea will be completely gone in the summer months.
What are some ways this phenomenon could be stopped? If people stopped using so much co2 in the world it would probably calm down a little and all the ice would stop melting. Secondly if they planted more trees to make photosythesis it would suck all the co2 out of the air and produce oxygen.
Is there anything you could do to contribute to the reversal. I coould tell my mom to stop riding around town so much and try walking to the close places. I could also tell my mom to make my brother ride the bus instead of riding in the car all the time and burning all that gas.
List three things you learned from this article in your own words. I learned that walruses need the thick ice to support their weight. I also learned that the artic ice that is melting is reducing their environment. The last thing I learned is that all the ice doesn't have to melt then but could melt before2080.
What impact would the continuance of these process have on the biosphere? It could cause the whole world to over heat and cause aquatic life to die because of the temperature change.
Walruses have been spotted in on the Russian Artic coast. They have been spotted on this coast because of the melting of the Artic Sea ice. They need the ice to support them because they can't swim constantly but need to stop after foraging for food. The sea ice thickness has been reduced by 40 percent siin the last 30 years. Rhey are saying in 2080 the artic sea will be completely gone in the summer months.
What are some ways this phenomenon could be stopped? If people stopped using so much co2 in the world it would probably calm down a little and all the ice would stop melting. Secondly if they planted more trees to make photosythesis it would suck all the co2 out of the air and produce oxygen.
Is there anything you could do to contribute to the reversal. I coould tell my mom to stop riding around town so much and try walking to the close places. I could also tell my mom to make my brother ride the bus instead of riding in the car all the time and burning all that gas.
List three things you learned from this article in your own words. I learned that walruses need the thick ice to support their weight. I also learned that the artic ice that is melting is reducing their environment. The last thing I learned is that all the ice doesn't have to melt then but could melt before2080.
What impact would the continuance of these process have on the biosphere? It could cause the whole world to over heat and cause aquatic life to die because of the temperature change.
Giant pandas under threat from parasitic worm, Ukyla Johnson
http://environment.newscientist.com/article/dn13016-giant-pandas-under-threat-from-parasitic-worm.html-
This parasitc worm found in many giant pandas are becoming extinct. Even though they are already close to extintion they are under a lot of pressure of not becoming fully extinct. Tehy had fond that from the 1990's onwards many pandas that were dying was because of parasitic problems and not just natural deaths.
Why is this species endangered? This species is about to become exctinct because of a parasitic worm.
What could prevent this organism from going extinct?If they found a way to kill the worm and stop it from spreading throught the panda population.
List three things you learned from this article in your own words. I learned that the disease from the worm causes haemorrhaging of the liver, intestines, and lungs. I also learned that the name of the disease is visceral larval migrans.I have learned also that the parasit has mabye been brought on because of the deforestation.
What impact would the absence of this organism have on its ecosystem/community? It could cause all the pandas to die away and then animals will probobly start having to live closer together if they keep cutting down trees making the parasite move from host to host.
This parasitc worm found in many giant pandas are becoming extinct. Even though they are already close to extintion they are under a lot of pressure of not becoming fully extinct. Tehy had fond that from the 1990's onwards many pandas that were dying was because of parasitic problems and not just natural deaths.
Why is this species endangered? This species is about to become exctinct because of a parasitic worm.
What could prevent this organism from going extinct?If they found a way to kill the worm and stop it from spreading throught the panda population.
List three things you learned from this article in your own words. I learned that the disease from the worm causes haemorrhaging of the liver, intestines, and lungs. I also learned that the name of the disease is visceral larval migrans.I have learned also that the parasit has mabye been brought on because of the deforestation.
What impact would the absence of this organism have on its ecosystem/community? It could cause all the pandas to die away and then animals will probobly start having to live closer together if they keep cutting down trees making the parasite move from host to host.
Tuesday, September 18, 2007
Radiation-loving fungi: the perfect space food?
http://space.newscientist.com/article/dn11917-radiationloving-fungi-the-perfect-space-food.html
2) What benefits or problems can you foresee with this particular fungus?
3) List three things you learned from this article in your own words.
4) Infer what potential impact this fungus will have on the environment it grows in.
It is mainly saying that a radioactive mushroom grows more and being edible in space it will help the space travelers on extended mission by them being able to have more food. It also explains what will happen if they added more melanin to one mushroom and left one mushroom alone to grow and just zapped them both with gamma rays. As expected the dark colored melanin filled one grew more. Arturo Casadeval thinks that fungi will be able to live in the worst conditions as long as their is radiation. The dark colored fungi uses the pigment that also makes our skin dark, melanin.
1) What type of lifestyle does the fungus in the article have? (Is it saprophytic, autotrophic, or parasitic?) What information lead you to this conclusion?
It is autotrophic and saprophytic. This lead me to these conclusions because if is absorbs radiation which is just another form of sunlight then it's autotrophic. It is saprophytic because it can still absorb dead materials and it loves moist dark places.
2) What benefits or problems can you foresee with this particular fungus?
It will become to radioactive and probably cause harm to the people trying to eat or touch it.
3) List three things you learned from this article in your own words.
I learned that there really is such a thing a a radioactive mushroom. I also learned that they could probably grow on just radiation. I also learned that it could help astronauts in outer space by them having extra food.
4) Infer what potential impact this fungus will have on the environment it grows in.
It probably will cause other things to become radioactive and may cause things to grow larger or die. People may become radioactive and dying might occur of the human race or not.
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